Webster’s Revised Unabridged Dictionary · 1913
Sida
Si′da (sī′dȧ), n. [NL., fr. Gr. σέδη a kind of plant.] (Bot.) A genus of malvaceous plants common in the tropics. All the species are mucilaginous, and some have tough ligneous fibers which are used as a substitute for hemp and flax. Balfour (Cyc. of India).